Finding the Fourth Proportional to 1,144.71, 1,715.84 and 819.09
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Solution
The fourth proportional to 1,144.71, 1,715.84 and 819.09 is: 1,227.75
Step by Step Solution
- Step 1: Write the proportion equation
1,144.71 : 1,715.84 = 819.09 : x - Step 2: Convert to fraction form
1,144.71/1,715.84 = 819.09/x - Step 3: Cross multiply
1,144.71x = 1,715.84 × 819.09 - Step 4: Simplify right side
1,144.71x = 1,405,423.29 - Step 5: Solve for x
x = 1,405,423.29/1,144.71 - Step 6: Final answer
x = 1,227.75
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.